build(nix): update flake

Taskfile.yml

@@ -169,3 +169,14 @@ tasks:
       - git tag {{.NEXT}}
       - echo {{.NEXT}}
       - git push origin --tags
+
+  nix:flake:update-vendor:
+    desc: update default flake package vendor hash
+    cmds:
+      - bash ./scripts/nix-update-flake.sh
+    generates:
+      - flake.nix
+    sources:
+      - flake.lock
+      - go.mod
+      - go.sum

flake.nix

@@ -1,14 +1,12 @@
 {
   inputs = {
     nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
-    staging.url = "github:caarlos0/nixpkgs/wip";
     flake-utils.url = "github:numtide/flake-utils";
   };
-  outputs = { nixpkgs, staging, flake-utils, ... }:
+  outputs = { nixpkgs, flake-utils, ... }:
     flake-utils.lib.eachDefaultSystem (system:
       let
         pkgs = nixpkgs.legacyPackages.${system};
-        staging-pkgs = staging.legacyPackages.${system};
       in
       {
         packages.default = pkgs.buildGoModule {
@@ -17,14 +15,15 @@
           src = ./.;
           ldflags = [ "-s" "-w" "-X main.version=dev" "-X main.builtBy=flake" ];
           doCheck = false;
-          vendorHash = "sha256-P9jSQG6EyVGMZKtThy8Q7Y/pV7mbMl2eGrylea0VHRc=";
+          vendorHash = "sha256-g57tLk2+WWcdG0COqkQD7eLYG0TdC0RnlhLF6Qt4woY=";
         };
 
         devShells.default = pkgs.mkShell {
           packages = with pkgs; [
             go
             go-task
             gofumpt
+            nix-prefetch
           ];
           shellHook = "go mod tidy";
         };

scripts/nix-update-flake.sh

@@ -0,0 +1,6 @@
+#!/bin/sh
+NEW_HASH="$(nix-prefetch \
+	--option extra-experimental-features flakes \
+	'{ sha256 }: (builtins.getFlake (toString ./.)).packages.x86_64-linux.default.goModules.overrideAttrs (_: { vendorSha256 = sha256; })')"
+
+sed -i "s|vendorHash = \".*\"|vendorHash = \"${NEW_HASH}\"|" ./flake.nix